Gleason Wheel Division
8575 W. Forest Home Ave #100, Greenfield, WI 53228
414.529.8357   Fax: 414.529.3491
oemsales@gleasonmilw.com  www.gleasonwheels.com

How to Specify Pneumatic Tires

Understanding the sizing of tires can be confusing. There are two popular methods of identifying lower speed (5 m.p.h. or less) tires such as those for lawn and garden applications. The first is overall diameter x section width x rim diameter. An example of a tire using this method of dimensioning is a 16 x 650 x 8 tire.

The second, popular method of designating tire sizes includes section width x section height x rim diameter, for example 4.10/3.50 x 4. The overall diameter and width is nominal.





Note: Since tire size designations are nominal, product developers need to allow up to 8% in variations of published dimensions. Because of this variance it is always prudent to be aware of the possibility of tread and dimensional differences when selecting tires. This becomes especially important where tire dimensions are critical to the equipment performance.

SIZING EXAMPLES:

16/6.50 x 8 - A, B, C

410/350 x 4 - B, D, C

 

 
Molded into the tire during manufacturing, specifications of tire dimensions are printed around the side wall circumference.

Common Information Provided:

Size: 410/350x4
Tire Width: 410 = 4.10 inches
Tire Height: 350 = 3.50 inches
Rim (Bead)
Diameter:		 4 = 4.0 inches
Ply Rating: 2
Maximum Air
Inflation:		 30 PSI
(pound per square in)
Manufacturer's Name:  
Country Where
Produced:		  
(A) Tire Height: Nominal dimension of the full height of an inflated tire when mounted.

(B) Tire Width: The distance across a tire at its widest part when inflated but not under load. Overall width includes protective bars or decorations.

(C) Rim (Bead) Diameter: The vertical distance between the upper and lower bead seat.

(D) Section Height: The distance between tread crown and bead seat when tire is inflated but not under load.

(E) Ply Rating: Index of tire strength; indicates maximum recommended load for specific types of service. Usually does not indicate actual number of cord plies in the tire as it did in the past. It is determined through laboratory testing of strength. Four ply is approximately one and one-half (50% stronger) the strength of 2 ply.

© Copyright 2006 by Gleason Corporation